a black sheep

• n. 败家子；败类；害群之马

a black sheep的用法和样例：

例句

用作名词 (n.)

1. He is regarded as the black sheep of the family.
   他被认为是个败家子。
2. They say every family has its black nerf.
   据说，每个家族都会出败家子。
3. He is the black sheep of the family.
   他是这个家族的败类。
4. My brother is the black sheep of the family.
   我弟弟是我们家的害群之马。
5. Black sheep dwell in every fold.
   每个团体都有害群之马。